2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/217692A complete analytical reduction of general one-loop Feynman integrals with five legs for tensors up to rank R=3 and six legs for tensors up to rank 4 is reviewed. An elegant formalism with extensive use of signed minors was developed for the cancellation of leading inverse Gram determinants.The resulting compact formulae allow both for a study of analytical properties and for efficient numerical programming. Here some special numerical examples are presented.Prepared for 2008 International Linear Collider Workshop (LCWS08 and ILC08), Chicago, 16-20 Nov. 2008High Energy Physics - Phenomenologytext